1. Pulmonary Vascular Changes in Pulmonary Hypertension: Optical Coherence Tomography Findings

    Pulmonary Vascular Changes in Pulmonary Hypertension: Optical Coherence Tomography Findings

    A 25-year-old man presented with a 3-month history of recurrent syncope, exertional chest discomfort, and shortness of breath. On physical examination, he had right ventricular heave, loud P2, jugular venous distension, tricuspid regurgitation murmur, and lower extremity edema. D-dimer was negative. Echocardiography showed right ventricular hypertrophy with elevated right ventricular pressure. Left ventricular function was normal. Cardiac catheterization showed pulmonary artery pressure of 131/50/78 mm Hg (concurrent aortic pressure was 145/80 mm Hg). Pulmonary wedge pressure was 15 mm Hg. Pulmonary angiography showed dilation of the main pulmonary artery with peripheral tapering (Figure 1). After pulmonary angiography ...

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